Lathe-tool.



A. STEVENSON.

LATHIl TOOL.

APBLICATION FILBDAPR. 21, 1909.

Patent-,ed 0611.26, 1909.

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LATHE TOOL.

M APPLIOATION FILED APB. l21, 1909.

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937,886. Patented 0016.26, 1909.

V M JWM /Mww- @MMM/W ANDREW sTEvENsoN, oE SEATTLE, wnsiiIN'eToN.

LATHE-TOOL.

Specicaton of Letters Patent.

Patented Oct. 26, 1909.

Application led April 21, 1909. Serial No. 491,365.

To all whom ,it may concern.'

Be it known that I, ANDREW S'rEvENsoN, citizen of the UnitedA States,residing at Seattle, in the county of King and State of lVashington,have invented new and useful Improvements in Lathe-Tools, of which thefollowing is a specication.

My present invention has to do with lathe tools; and it contemplates theprovision of what may be properly denominated a combined lathe tool andfollower rest, embodying such a construction that it is calculated toretain its own work without the use of a dead center, to any size andlength, and with the use of a certain kind of bushing is adapted to beemployed to advantage for duplicate or any irregular work.

With the foregoing in mind, the invention will be fully understood fromthe following description and claims, when the same are read inconnection with the drawings, accompanying and forming part of thisspecication, in which:

Figure 1 is an elevation showing one side of a tool and follower restconstructed in accordance with my inventio-n. Fig. 2 is an elevationshowing the opposite side of the same. Fig. 3 is a view taken at rightangles to Figs. 1 and 2. Fig. 4 is a transverse section taken in theplane indicated by the line 4--1 of Fig. 3. Fig. 5 is a longitudinalcentral section, taken in the plane of the line 5-5 of Fig. 1. Fig. 6 isa view showing in elevation the opposite side of the tool body per sewith reference to that shown in Fig. l. Fig. 7 is a view of theinterchangeable bushing. Figs. 8 to 12 are elevations of irregular formsfor which the tool may be used when the alternate bushing, Fig. 7 isemployed.

Referring by letter to the said drawings and more particularly to Figs.1 to 5, thereof: A is the body or major portion of the tool, which ispreferably in one piece of steel. The said body is provided adjacent itsforward end with a through and through transverse aperture a with whichcommunicates a threaded bore b, disposed at a right angle to theaperture, and designed to receive a set screw c. The body A is alsoprovided in one side with a longitudinal groove Z which extends from theaperture a to the rear end of the body and has undercut side walls e. Atits rear end the body has a longitudinalcentral, smooth-bore aperture f,in advance of which is a threaded bore g which communicates at itsforward end with a chamber h, having a seat i in its forward end wall.The transverse aperture a in body A 1s designed to receive a bushing B,flanged at y to engage one side of the body and designed to bedetachably fixed in the body through the medium of the set screw c. Itwill be manifest from this that when desired the bushing B2, Fig. 7, maybe expeditiously and easily substituted for the bushing B, and I wouldhave it understood that when the said bushing B2 is employed the toolcan be used to advantage for duplicate or any irregular Work Isuch asshown in Figs. 8 to 12.

C is the rectilinearly movable slide of the tool.

This slide has itsl edges beveled invv conformity to the undercut wallsof the Y body grooveV al in which it is movable fore 'and aft, and isprovided on the outer side of its forward portion with an enlargement min which is a longitudinally-disposed, cutter-receiving socket a,preferably of angular form in cross-section, and a threaded bore p whichcommunicates with said socket and is designed to receive a set screw Dfor detachably xing a suitable cutter E in the socket n. At its innerside and adjacent its rear end the slide C is provided with a lateralprojection 7' in which is a longitudinally-disposed aperture s.

F is the screw for adjusting and adjustably xing the slide andconsequently positioning the cutter E, relative to the center of thebushing B. The said screw F is journaled in the aperture s of projectionr and is held against endwise movement with respect to the slide C, bythe enlargement t disposed in front of the projection r, and thefinger-piece a, disposed in rear of the proj ection 1" and held on thescrew shank and in engagement with a key thereof by a nut o.

It will be manifest from the foregoing that when the screw F is turnedin one direction through the threaded bore g in the body A, the slide Cand the parts carried thereby will be moved forwardly, while when thescrew F is turned in the opposite direction through bore g, the slideand the parts thereon will be retracted. It will also be manifest thatwhen the slide C reaches the extremity of its forward adjustment, theforward end of the screw will bring up in the seat z', and the lateralprojection 1" on the slide will occupy the aperture f in the rearend ofthe body.

It will be gathered from the foregoing n claim and desire to secureV byLetters-Patthat my improved device is simple and compact in constructionandV is susceptible of quick and easy adjustment; also, that the partsthat are adjustable are supported and reinforced by the body'A. Y

rlhe construction herein illustrated and described constitutes the bestypractical embodiment of my invention of which I am cognizant, but 1t isobvious that inthe future practice of the invention such changes in theform, construction and relative arrangement of parts may be made as donot involve departure from the scope of my invention as defined in theclaims appended.

Having described my invention, what I ent, is:

1. A lathe tool comprising a body having a longitudinal groove extendingfrom its rear end forwardly, a longitudinal threaded bore parallel withthe groove, a seat disposed in front of the bore and a smooth aperturedisposed in rear of the bore, a slide movable rectilinearly in thegroove of the body and adapted to receive and carry a cutter, a lateralprojection having an aperture on the inner side of the rear portion ofthe slide,

andV a screw journaled inthe aperture of said projection vand heldagainst endvvise movement with respect thereto.V and pro.-

vided in rear of the projection with a finj ger-piece and having itsforward portion ena portion of the body at the extremity of the forwardadjustment of the slide.

In testimony whereof I have'hereunto setv my hand in presence of twosubscribing witnesses. j j Y `ANDREW STEVENSON.

Witnesses:

M, B. SACHS, JAS. N. SOMMER.

ly fix the slide with'- respect to the body; the forward end of the saidscrew being adapted to bring up against

